Articles
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WebHint in Firefox DevTools: Improve Compatibility, Accessibility and more
Creating experiences that look and work great across different browsers is one of the biggest challenges on the web. It can also be the most rewarding part, as it gets your app to as many users as possible. Testing legacy browsers late in the development process can break a feature that you spent hours on, even requiring rewrites to fix. What if the tools in your primary development browser could warn you sooner? With Webhint in Firefox DevTools, we can do exactly that, and more.
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Exploring Collaboration and Communication with Mozilla Hubs
As we look at advancements in mixed reality like the WebXR API, we are able to explore ways to feel more present with others through technology. Hubs by Mozilla is built on top of WebRTC and supports real-time conversations between users in a shared virtual environment. Users embody 3D models in the glTF format called avatars. The code powering Hubs is available online on GitHub under the MPL and we welcome contributions from the community.
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Moving Firefox to a faster 4-week release cycle
Building and releasing a browser is complicated and involves many players. To optimize the process, and make it more reliable for all users, over the years we’ve developed a phased release strategy that includes ‘pre-release’ channels: Firefox Nightly, Beta, and Developer Edition. Starting Q1 2020, we're making a change. We plan to start shipping a major Firefox release every 4 weeks!
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Caniuse and MDN compatibility data collaboration
Today we’re announcing the integration of MDN’s compat data into the caniuse website. Together, we’re bringing even more web compatibility information into the hands of web developers.
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Debugging TypeScript in Firefox DevTools
Firefox Debugger has evolved into a fast and reliable tool chain over the past several months and it’s now supporting many cool features. Though it's primarily used to debug JavaScript, did you know that you can also use Firefox to debug your TypeScript applications? Jan 'Honza' Odvarko walks through some real world examples.
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Debugging WebAssembly Outside of the Browser
WebAssembly has begun to establish itself outside of the browser via dedicated runtimes like Mozilla’s Wasmtime and Fastly’s Lucet. While the promise of a new, universal format for programs is appealing, it also comes with new challenges. At Mozilla, we’ve been prototyping ways to enable source-level debugging of .wasm files using existing tools, like GDB and LLDB.
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Firefox 69 — a tale of Resize Observer, microtasks, CSS, and DevTools
For our latest excellent adventure, we’ve gone and cooked up a new Firefox release. Version 69 features a number of great new additions including JavaScript public instance fields, the Resize Observer and Microtask APIs, CSS logical overflow properties (e.g. overflow-block) and @supports for selectors.
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The Baseline Interpreter: a faster JS interpreter in Firefox 70
Modern web applications load and execute a lot more JavaScript code than they did just a few years ago. While JIT (just-in-time) compilers have been very successful in making JavaScript performant, we needed a better solution. We’ve added a new, generated JavaScript bytecode interpreter to the JavaScript engine in Firefox 70. Instead of writing a new interpreter from scratch, we found a way to do this by sharing most code with our existing Baseline JIT. Meet the new Baseline Interpreter.
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WebAssembly Interface Types: Interoperate with All the Things!
People are excited about running WebAssembly outside the browser. People are also excited about running WebAssembly from languages like Python, Ruby, and Rust. Lin Clark's Code Cartoons are back, illustrating an in-depth look at WebAssembly Interface Types, and the proposed spec to make it possible for WASM to interoperate with All The Things!
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Using WebThings Gateway notifications as a warning system for your home
The WebThings Gateway 0.9 release lets you set up a number of different notification mechanisms including emails, apps, and text messages. In this post James Hobin shows how to set up custom gateway notifications to warn you of changes in your home that you care about.
